base64

gistfile1.c

NSString *base64Encode(NSData *data);
NSString *base64Encode(NSData *data) {
    BIO *context = BIO_new(BIO_s_mem());
	BIO *command = BIO_new(BIO_f_base64());
    context = BIO_push(command, context);
	
    BIO_write(context, [data bytes], (int) [data length]);
    (void) BIO_flush(context);
	
    char *outputBuffer;
    long outputLength = BIO_get_mem_data(context, &outputBuffer);
    NSString *encodedString = [[[NSString alloc] initWithBytes:outputBuffer length:(NSUInteger) outputLength encoding:NSUTF8StringEncoding] autorelease];
	
    BIO_free_all(context);
	
    return encodedString;
}